.field-validation-error {
color: #f00;
}

.field-validation-valid {
display: none;
}

.input-validation-error {
border: 1px solid #f00;
background-color: #fee;
}

.validation-summary-errors {
font-weight: bold;
color: #f00;
}

.validation-summary-valid {
display: none;
}

Style.css

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;

namespace PartyInvites.Models
{
public class GuestResponse
{
[Required(ErrorMessage = "Please enter your name")]
public string Name { get; set; }
[Required(ErrorMessage="Please enter your email address")]
[RegularExpression(".+\\@.+\\..+",ErrorMessage="Please enter a valid email address")]
public string Email { get; set; }
[Required(ErrorMessage="Please enter your phone number")]
public string Phone { get; set; }
[Required(ErrorMessage="Please specify whether you'll attend")]
public bool? WillAttend { get; set; }
}
}

Model__GuestResponse.cs

在view文件夹中，Home控制器内存在3个主视图

@{
Layout = null;
}